Forest fires or open space fires are natural disasters, a common occurrence of which is characteristic of the climate in which we live. Fire prevention and fire operations are safety measures that enable faster prevention and extinguishing of fires resulting in less burned area and rescue of the forest ecosystem in the territory of the Republic of Croatia. Very important items of open space fire are the factors that influence the occurrence of a fire and its behavior when burning outdoors. In this paper, It will be shown how open-air fires occur, how open-air fires are extinguished, and how they can be acted upon to try to prevent fires. The final part of the paper describes the case of open space firefighting, written according to the report of JVP Gracac and DVD Gracac.